>From: ChiPieAlandPaula@xxxxxxx >Reply-To: mailing-list@xxxxxxxxxxxxxxxx > >Hello All, <snip> >The answer was that the valves were >chromium plated so they would not wear prematurely. He did say that this was a >"truck" version of the 413. >My question is simple. Was this a brushoff from the mechanic? If not, is it >possible that all 413 were constructed in this manner? Comments? My understanding is that all the 413 / 440 engines have hard valve seats, so that your only problems with running unleaded are hose/gasket/ rubber fuels system parts, and not being easily able to make design octane. I find running unleaded the engine makes a slightly louder sound, and unleaded is supposed to burn a little hotter, but I don't think there're any other detrimental effects. -Kle. '69 Crown 4DHT ----------------- http://www.imperialclub.com ----------------- This message was sent to you by the Imperial Mailing List. Please reply to mailing-list@xxxxxxxxxxxxxxxx and your response will be shared with everyone. Private messages (and attachments) for the Administrators should be sent to webmaster@xxxxxxxxxxxxxxxx To UN-SUBSCRIBE, go to http://imperialclub.com/unsubscribe.htm